以下是不同語言的Unix時間戳(Unix timestamp)函數：
Java
time
JavaScript
Math.round(new Date().getTime()/1000)
getTime()返回數值的單位是毫秒
Microsoft .NET / C#
epoch = (DateTime.Now.ToUniversalTime().Ticks – 621355968000000000) / 10000000
MySQL
SELECT unix_timestamp(now())
Perl
time
PHP
time()
PostgreSQL
SELECT extract(epoch FROM now())
Python
先 import time 然後 time.time()
Ruby
獲取Unix時間戳：Time.now 或 Time.new
顯示Unix時間戳：Time.now.to_i
SQL Server
SELECT DATEDIFF(s, ‘1970-01-01 00:00:00’, GETUTCDATE())
Unix / Linux
date +%s
VBScript / ASP
DateDiff(“s”, “01/01/1970 00:00:00”, Now())
其他操作系統
(如果Perl被安裝在系統中)
命令行狀態：perl -e “print time”
如何在不同編程語言中實現Unix時間戳(Unix timestamp) → 普通時間？
Java
String date = new java.text.SimpleDateFormat(“dd/MM/yyyy HH:mm:ss”).format(new java.util.Date(Unix timestamp * 1000))
JavaScript
先 var unixTimestamp = new Date(Unix timestamp * 1000) 然後 commonTime = unixTimestamp.toLocaleString()
Linux
date -d @Unix timestamp
MySQL
from_unixtime(Unix timestamp)
Perl
先 my $time = Unix timestamp 然後 my ($sec, $min, $hour, $day, $month, $year) = (localtime($time))[0,1,2,3,4,5,6]
PHP
date(‘r’, Unix timestamp)
PostgreSQL
SELECT TIMESTAMP WITH TIME ZONE ‘epoch’ + Unix timestamp) * INTERVAL ‘1 second’;
Python
先 import time 然後 time.gmtime(Unix timestamp)
Ruby
Time.at(Unix timestamp)
SQL Server
DATEADD(s, Unix timestamp, ‘1970-01-01 00:00:00’)
VBScript / ASP
DateAdd(“s”, Unix timestamp, “01/01/1970 00:00:00”)
其他操作系統
(如果Perl被安裝在系統中)
命令行狀態：perl -e “print scalar(localtime(Unix timestamp))”
如何在不同編程語言中實現普通時間 → Unix時間戳(Unix timestamp)？
Java
long epoch = new java.text.SimpleDateFormat(“dd/MM/yyyy HH:mm:ss“).parse(“01/01/1970 01:00:00”);
JavaScript
var commonTime = new Date(Date.UTC(year, month – 1, day, hour, minute, second))
MySQL
SELECT unix_timestamp(time)
時間格式: YYYY-MM-DD HH:MM:SS 或 YYMMDD 或 YYYYMMDD
Perl
先 use Time::Local 然後 my $time = timelocal($sec, $min, $hour, $day, $month, $year);
PHP
mktime(hour, minute, second, month, day, year)
PostgreSQL
SELECT extract(epoch FROM date(‘YYYY-MM-DD HH:MM:SS‘));
Python
先 import time 然後 int(time.mktime(time.strptime(‘YYYY-MM-DD HH:MM:SS‘, ‘%Y-%m-%d %H:%M:%S’)))
Ruby
Time.local(year, month, day, hour, minute, second)
SQL Server
SELECT DATEDIFF(s, ‘1970-01-01 00:00:00’, time)
Unix / Linux
date +%s -d”Jan 1, 1970 00:00:01″
VBScript / ASP
DateDiff(“s”, “01/01/1970 00:00:00”, time)
